| Exam Board | AQA |
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| Module | Further Paper 1 (Further Paper 1) |
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| Year | 2019 |
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| Session | June |
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| Topic | Hyperbolic functions |
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1 Which one of these functions has the set \(\{ x : | x | < 1 \}\) as its greatest possible domain?
Circle your answer.
$$\cosh x \quad \cosh ^ { - 1 } x \quad \tanh x \quad \tanh ^ { - 1 } x$$